But ProPublica‘s newest project on hate crimes is raising eyebrows because of its reliance on a questionable source for its data. The report says more than 370 “hate incidents” directed at U.S. mosques and Islamic centers have been catalogued by CAIR since April 2013.

“Most of the incidents are threats to worshippers’ lives or acts of vandalism,” according to the report, which depends solely on CAIR for its list of anti-Muslim hate crimes.

CAIR, which ProPublica refers to as simply “a civil rights group,” has been tied to the extremist Muslim Brotherhood and the terrorist organization Hamas. Federal prosecutors named CAIR as an unindicted co-conspirator in the Holy Land Foundation trial that was prosecuted during the Bush administration, and nearly a dozen of CAIR’s leaders and former leaders have been charged and/or convicted of terror-related crimes.